1. Hybrid-Cloud App Consuming External Services Sketches of Hybrid Cloud Apps using On-Premise Services…

2. User Story Sketch Cloud CRM application users are employees of a company whose employee records are maintained in a SOR identity provider service and whose security policy is for this IdP DB to be on premise. Connectivity requirement for the App tier might be modelled by a specialization of TOSCA’s normative connects-to base relationshiptype. But probably better ways. Requirements and capabilities on source & target nodes:TBD. External “tier” needs no installation operation, nor layers of nodes. Cloud app tier may have an installation script covering the details of a tunnel to the IdP service. The IdP part of this use case is an adornment. The essence is that some policy demands use of an already deployed (and managed) service for policy, business, or other reasons. Otherwise they won’t use the cloud! The service can be on-premise or in a public cloud. But semantics really need to embrace the on-premise case.

3. SugarCrmApp [SugarCRMApplication] SugarCrmDb [SugarCRMDatabase] ApacheWebServer [ApacheWebServer] MySql [MySQL] Externally connects to hosted on depends on VmApache [Server] VmMySql [Server] hosted on OsApache [OperatingSystem] OsMySql [OperatingSystem] hosted on WebTier [Tier] DbTier [Tier] PhpModule [ApachePHPModule] IdProviderTier [Tier] connects to Gestural Model: WebServer doing IdP check.

4. SugarCrmApp [SugarCRMApplication] SugarCrmDb [SugarCRMDatabase] ApacheWebServer [ApacheWebServer] MySql [MySQL] hosted on depends on VmApache [Server] VmMySql [Server] hosted on OsApache [OperatingSystem] OsMySql [OperatingSystem] hosted on WebTier [Tier] DbTier [Tier] PhpModule [ApachePHPModule] IdProviderTier [Tier] Externally connects to connects to Variant App doing IdP check.